Sewer inlet



T. J. BURTON. SEWER INLET. APPLICATION FILED JUNE 26, I922.

Patented Nov. 7, 1922.

'l lllk l Patented Nov. 7, 19.21.

THOMAS BURTON, OF MUBPHYSBOBO. ILLINOIS SEWER Application filed June 26,

To all whom it may concern- Be it known that I, THOMAS J. BURTON, a citizen of the United States, residing at Murphysboro, in the county of Jackson and State of Illinois, have invented certain new and useful Improvements in Sewer inlets; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to an improved inlot and cover construction for sewers and analogous devices. It has particular reference to sewer inlets which are located in the gutters and along the curlj stones oi streets, and the particular improvements inv the invention reside in ameans for locking the cover plate for the sidewalk manhole or openi g the sewer to the base-ring thereof and also in an improved base-ring and grated inlet construction for the sewer.

The improved locking; means for the sewer cover plate is mounted in the sewer inlet part of the base-ring in such a position that it is out of the way and yet is so easily accessible that it maybe easily and quickly unlocked when it is desired to remove the cover plate from the sewer opening. At the same time, the locking means is such. that when the cover plate having been removed. is placed upon the sewer opening, it will be automatically locked. The parts of this mechanism are of very simple construction so that they can be made and fitted together very quickly and easily and so that in makingthe parts very little if any machine work will be necessary.

In. addition to being providedjwith an improved locking means between the cover plate and base-ring of the sewer inlet, the latter is provided with an improved. grate construction for preventing refuse from passing into the sewer inlet and gaining access to the sewer proper.

Thedevice is of simple, strong, durable and inexpensive construction which are. qualities that are highly desirable in a device of this character.

The novelty of the invention resides in the various details of construction and combination and arrangement of parts which are hereinafter fully described and claimed and shown in the accompanying drawing.

in the accompanying drawing;- which forms a part of this specification:

INLET.

1922. Serial No. 571,967.

Fig. 1 is a top plan view of a sewer inlet and cover constructed so as to embody. the principles of the present invention,

Fig. 2 is a central vertical longitudinal sectional view oi": the sewer inlet and cover. said view being ta-lion substantial. y on the plane indicated by the line 22 oi? Fig. i,

Fig. 8 is a -Front view of the sewer inlet and cover,

Fig. 4: is a detail sectional view taken sub stantially on the plane indicated by the line l l of 2,

Fig. 5 is a detail sectional view taken substantially on the plane indicated by the line 55 of Fig. 1; and

Fig. 6 is a perspective view of the sewer inlet and cover.

The improvements which form the subject matter of the present invention are intended primarily to be incorporated in an inlet and cover construction. for sewers but they of course can be incorporated in analogous devices. However, in the accompanying" drawing, they are shown as applied to an inlet and cover construction for sewers, and in the drawing the numeral 1 is used to designate the base-ring of the sewer. This ring is intended to be ombeddedin the material out oil? which a sidewalk is constructed over the sewer openin which is located at a point adjacent the curbstone. The base-ring 1 is provided with a depending annular flange 2 and one side thereof is widened to provide a laterally projecting plate- 3. The upper surface of the base-ring l. and plate 3 is intended to lie flush with the surface of the sidewalk, and the plate 3 intended to project from the base-ring 1 toward the curl)- stone and have its "free edge disposed flush with the vertical edge oi the curbstone. The ring 1 is provided with. a countersunk annular shoulder 4 upon which the cover plate hereinafter described is intended to rest. The annular flange 2 at a point intermediate of the ends of the plate 3 is pro ided with an opening 5, and depending from the plate 3.

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to correspond with the ears or lugs 6 so as to receive bolts 8 or other suitable securing elements by which the flanges or side plates 8 are secured to the ears or lugs 6.

The lower side of the plate 3 and upper side of the plate 7 are provided with sockets 9, into which are fitted the ends of grate bars 10. The sockets 9 are disposed along the front edges of the plates 3 and 7, and hence the grate bars 10 are located along the curbstone so as to prevent refuse from passing into the sewer inlet.

Associated with the base-ring is a cover plate 11. This is intended to rest at its outer edge upon the countersunk annular shoulder 4i, and it is provided with a dependiug annular flange 12, the external or outer surface of which is provided. with a continuous groove 1.3. hen the cover plate 11 is in place upon the base-ring 1, the groove 13 is disposed in the same horizontal plane with the opening 5 in the flange 2 of the basering 1. In order to permit easy removal of the cover plate 11 from the basering 1, the cover plate 11 is provided with a handle 1st, which when not in use is in a lowered outoE-the-way place but which when in use may be pulled upwardly.

Secured in any suitable manner to the lower side oi the plate 3 is a housing 15, in which is enclosed and slid-ably mounted a latch 16. The latch 16 has its inner end projecting through the opening 5 in the flange 2 of the base-ring 1 and is provided intermediate of its ends with an upstanding lug 17 which engages the flange and between which and the end ot the housing 16 a coil spring 18 is interposed to maintain the latch yieldably projected. The outer end oi the latch 16 projects through an opening in the end of the housing 15 and this end or the latch is provided with a ring 19 or an equivalent element by which the latch may be pulled outwardly so as to retract it. The inner end of thelatch 16 is beveled from its upper side and the lower edge of the flange 12 of the cover plate 11 is beveled so that when the cover plate 11 is placed upon the base-ring 1, the latch 16 will be automatically retracted but as soon as the groove 13 is opposite the end of the latch 16, the latter will under the tension of the spring 18 automatically move inwardly into the groove and lock the cover plate to the ring.

The base-ring 1 with the plate 3 and the plate 7 with the flanges or side plates 8, and also the cover plate 11 with the flange 12 having a groove 13 therein, may be molded or cast. The parts of the locking means may be very easily and cheaply made since they are of very simple construction, and hence it will be seen that practically the whole device can be made without requiring but a very little machine work. The device is therefore of simple, strong, durable and inexpensive construction, which are highly desirable qualities for a device of this character.

From the foregoing description, taken in connection with the accompanying drawing, the construction and use of the invention will be readily understood without further description. It is obvious that various changes in form, proportion, and in the various details of construction may be resorted to without departing from the principle or sacrificing any ot the advantages of. the invention, and hence it is to be understood that such changes may be made within the meaning and scope ot the appended claims.

I claim:

1. In a cover construction for sewers and analogous devices, the combination of a base ring, a cover plate fitting said ring and provided with a depending annular flange having a continuous groove on the exterior side thereof, and a spring-projected latch mounted upon said rin and projectable into said groove to lock 1d cover plate upon said ring.

In a cover construction for sewers and analogous devices, the combination of a basering provided with a depending flange having an opening extending through one side thereof, a cover plate fitting said ring and prcwided with a depending flange having a (02111110115 groove on the exterior side thereot, said groove being disposed in the same plane with said opening through said flange oi said base-ring, a latch slidably mounted upon the lower side of said base-ring, said latch having its inner end exteudin g through said opening and being extendiole into said groove to lock said cover plate to said basering, and a spring associated with said latch and said base-ring for normally holding said latch projected.

3. In a cover construction for sewers and analogous devices, the combination of a base ring, a cover plate fitting said ring and provided with a depending annular flange having a continous groove on the exterior side thereoit, the ends of said plate,being provided with depending lugs, a U-shaped plate disposed beneath the base ring plate and means for fixedly fastening the arms of said U-shaped plate to the base ring plate through'said depending lugs, whereby water flowing onto said plate will be discharged into a vertical. column directly below said base ring.

In testimony whereof I have hereunto atfixed my signature.

THOMAS JAMES BURTON. 

